登入選單

返回Google圖書搜尋

New Specimens of the Pinnipediform Pteronarctos from the Miocene of Oregon

Annalisa Berta

出版	Smithsonian Institution Press, 1994
URL	http://books.google.com.hk/books?id=mWu8d6LGlN0C&hl=&source=gbs_api

註釋

New fossils of the pinnipediform Pteronarctos from the Miocene Astoria Formation of coastal Oregon provide more information on the cranial anatomy, interrelationships, and higher level phylogeny of this taxon. Additional skulls are referred to a previously described species, P. goedertae (Barnes, 1989). A previously named species, Pteronarctos piersoni (Barnes, 1990) is recognized as the junior synonym of P. goedertae. The genus Pacificotaria (Barnes, 1992) is synonymized with Pteronarctos. The genus Pteronarctos is removed from the “Enaliarctinae” (= “Enaliarctidae”) and recognized as the sister group of the Pinnipedia (including Otariidae, Odobenidae, Allodesmus, Desmatophoca, Pinnarctidion, and Phocidae).